Event Added Through API not visible in Google Calendar - google-api

Question

We are adding an Event through the Calendar API
Event ev = new Event();
ev.Summary = "ILINK TEST - IGNORE";
ev.Start = new EventDateTime();
ev.Start.DateTime = DateTime.Now.AddMonths(-3);
ev.End = new EventDateTime();
ev.End.DateTime = ev.Start.DateTime;
ev.Attendees = new List<EventAttendee>();
EventAttendee ea = new EventAttendee();
ea.Email = "example#example.com";
ev.Attendees.Add(ea);
Event evv = service.Events.Insert(ev, "example#example.com").Execute();
When we try and view the Event in the users calendar it is not visible. However we can retrieve the Event directly by Id
EventsResource.GetRequest gr = new EventsResource.GetRequest(service, "example#example.com", "43ha9dpv15h5oj2jv853g4vljk");
gr.AlwaysIncludeEmail = true;
Event evv = gr.Execute();
When we remove the attendee entry for the Owner "example#example.com" the Event becomes visible in the Calendar
evv.Attendees.Remove(ea);
So what we are seeing is that when the Owner of the Event is an attendee then it is not visible in Their Google Calendar.
I have checked the ACL Rules and the following entry exists
ETag "\"00000000000000000000\""
Id "user:example.example.com"
Kind "calendar#aclRule"
Role "owner"

Answer 1

Thanks to #luc,
The issue here is that the user does indeed have in their Calendar settings the following setting = 'No, only show invitations to which I have responded'
In my example the EventAttendee is added but their ResponseStatus is 'actionNeeded' - hence it is not visible in the calendar despite the owner being the user.
If in my code, I set the ResponseStatus of the EventAttendee to 'accepted' then it becomes visible in the users calendar. Correct code needs to be:
Event ev = new Event();
ev.Summary = "ILINK TEST - IGNORE";
ev.Start = new EventDateTime();
ev.Start.DateTime = DateTime.Now.AddMonths(-3);
ev.End = new EventDateTime();
ev.End.DateTime = ev.Start.DateTime;
ev.Attendees = new List<EventAttendee>();
EventAttendee ea = new EventAttendee();
ea.Email = "example#example.com";
ea.ResponseStatus = "accepted";
ev.Attendees.Add(ea);
Event evv = service.Events.Insert(ev, "example#example.com").Execute();